The high-quality self-sealing adhesive tape is tamper-proof and anti-counterfeiting. 1 Waterproof. Usable Size 8.5×11″ 4×7″ 6×9″ 10.5×16″ 6×9″ 6×9″ 8.5×11″. Shape Rectangular. Waterproof ✔ ✔ ✔ ✔ ✔ ✔ ✔.